Hi Mauro, On Tuesday 22 October 2013 11:42:37 Mauro Carvalho Chehab wrote: > Em Tue, 22 Oct 2013 09:47:02 +0000 Hans Verkuil escreveu: > > Here is the final schedule. I moved a few topics around at the request of > > Laurent and to make it a better fit for the break times. > > > > Please note that the LED topic has moved to a slightly later timeslot. > > > > > > > > We plan to start at 9:00 and we have the Glamis room until 18:00. > > > > The schedule is as follows: > > > > 9:00 Welcome/Introduction > > > > 9:10 Mauro Carvalho Chehab > > > > - Better integration between DVB and V4L2, including starting using the > > media controller API on DVB side too. > > Michael requested to have this presentation on a latter time, in order for > him to also participate on it. > > Also, as this is media controller related, I think it makes sense to have > Laurent participating on those discussions. I will very likely not be able to make it to the V4L/DVB mini-summit before 11:30, and certainly not before 10:30. I will miss whatever is moved to the 9:10 slot. > > 30 min > > > > 9:40 Kieran Kunhya > > > > - (3G/HD-)SDI multiplexed raw format > > > > This is a professional interface used in broadcasting and CCTV. > > The most serious issue is that many vendors provide Linux drivers with > > V4L2 and ALSA - which is not acceptable for maintaining lipsync, let > > alone maintaining the exact relationship between audio samples and > > video that SDI provides. > > > > Some other issues are mentioned here: https://wiki.videolan.org/SDI_API/ > > The wiki page has a very loose proposal for an API, though perhaps the > > per-line idea is ambitious at this stage. Field or frame capture is > > more realistic. > > > > 10:00 Break > > > > 10:30 Ricardo Ribalda Delgado, Sylwester Nawrocki > > > > - Support for multiple rectangle cropping > > > > See thread: http://www.spinics.net/lists/linux-media/msg67824.html > > > > 10:50 Sylwester Nawrocki > > > > - LED flash support > > > > 11:10 Hans Verkuil > > > > - Colorspace: limited/full range > > Draft presentation for all these topics: > > http://hverkuil.home.xs4all.nl/presentations/summit2013.odp > > > > 11:20 Hans Verkuil > > > > - VIDIOC_TRY_FMT shouldn't return -EINVAL when an unsupported pixelformat > > is provided, but in practice video capture board tend to do that, while > > webcam drivers tend to map it silently to a valid pixelformat. Some > > applications rely on the -EINVAL error code. > > > > We need to decide how to adjust the spec. I propose to just say that > > some drivers will map it silently and others will return -EINVAL and > > that you don't know what a driver will do. Also specify that an > > unsupported pixelformat is the only reason why TRY_FMT might return > > -EINVAL. > > > > Alternatively we might want to specify explicitly that EINVAL should be > > returned for video capture devices (i.e. devices supporting S_STD or > > S_DV_TIMINGS) and 0 for all others. > > > > 11:40 Hans Verkuil > > > > - Decide on how v4l2 support libraries should be organized. There is code > > for handling raw-to-sliced VBI decoding, ALSA looping, finding > > associated video/alsa nodes and for TV frequency tables. We should > > decide how that should be organized into libraries and how they should > > be documented. The first two aren't libraries at the moment, but I think > > they should be. The last two are libraries but they aren't installed. > > Some work is also being done on an improved version of the 'associating > > nodes' library that uses the MC if available. > > > > 12:00 Lunch > > > > 13:00 Hans Verkuil > > > > - Define the interaction between selection API, ENUM_FRAMESIZES and S_FMT. > > See this thread for all the nasty details: > > > > http://www.spinics.net/lists/linux-media/msg65137.html > > > > Also see my draft presentation (link above) for more info and proposals. > > I have a speech at LinuxCon Europe between 12:05 and 12:55. I should be > on lunch after that. So, I'll likely miss this one. > > > 14:00 Laurent Pinchart > > > > - Status update regarding the media controller API usage on ALSA (Mauro > > likes to know) and sharing i2c transmitters between V4L2 and DRM (Hans > > V. likes to know). > > > > 14:10 Sakari Ailus > > > > - Multi-format frames and metadata. Support would be needed on video nodes > > and V4L2 subdev nodes. I'll prepare the RFC for the former; the latter > > has an RFC here: http://www.spinics.net/lists/linux-media/msg67295.html > > > > 15:00 Break > > > > 15:30 Hugues Fruchet > > > > - How to handle codecs where part of the processing is done in HW and part > > in SW? > > > > 17:30 End > > > > > > Note: these times are tentative. Some topics will take less time, some > > will take more time. -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
